partitionE for Nel

[fommil]

any interest in this?

  // a partitionE for Nel
  implicit class PartitionE[E](trav: NonEmptyList[E]) {
    @SuppressWarnings(Array("org.wartremover.warts.Throw"))
    def partitionE[A, B](
        f: E => Either[A, B]
      ): (Ior[NonEmptyList[A], NonEmptyList[B]]) = {
      val (lefts, rights) = trav.toList.map(f).partition(_.isLeft)
      Ior
        .fromOptions(
          Nel(lefts.collect { case Left(left) => left }),
          Nel(rights.collect { case Right(right) => right })
        )
        .getOrElse {
          throw new IllegalStateException("impossible")
        }
    }
  }

[edmundnoble]

Love it, 👍

[LukaJCB]

Why was this closed? I still think this is a valuable addition 🤔

[fommil]

I don't have plans to contribute it.